Design of a compact wide-spectrum double-channel prism imaging spectrometer with freeform surface
| Autor: | Wei Lidong, Feng Lei, Zhou Jinsong, Li Yacan, Bin Xiangli, He Xiaoying, Jing Juanjuan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
Spectrometer business.industry Stray light Imaging spectrometer 02 engineering and technology Spectral bands 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics law.invention VNIR 010309 optics Optics law 0103 physical sciences Prism Electrical and Electronic Engineering Spectral resolution 0210 nano-technology business Engineering (miscellaneous) Beam splitter |
| Zdroj: | Applied optics. 57(31) |
| ISSN: | 1539-4522 |
| Popis: | A double-channel prism imaging spectrometer that includes visible-near-infrared (VNIR) and shortwave-infrared (SWIR) spectra is presented. Double slits divide a wide spectral band into two independent channels for VNIR and SWIR, guaranteeing their independent spectral resolution. A beam splitter splits the band into two, one detected by the SWIR and the other by the VNIR detector. The freeform surface, as a mirror, compensates for astigmatism across a wide spectral band. An imaging spectrometer with 30° field of view and a measured spectrum from 400 nm to 2500 nm is designed. This compact, cost-effective spectrometer with high performance and small spectral distortion has a huge potential for broadband space exploration. |
| Databáze: | OpenAIRE |
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